Marco Zappacosta joins Founders in Arms to discuss AI, marketplaces, and why trust still defines home services. He shares lessons from building Thumbtack for 17 years and explains why AI is more likely to accelerate marketplaces than replace them.

Prometheus Fuels CEO Rob McGinnis explains how his company converts CO₂ from the air into gasoline, diesel, and jet fuel using renewable electricity—and why this could radically reshape global energy infrastructure.

Sahil Lavingia shares lessons from building Gumroad, working inside DOGE and the VA, using AI coding tools like Cursor and Devin, and turning a venture-backed startup into a profitable company.

Hiten Shah shares hard-won lessons on product-market fit, startup strategy, AI waves, and the difference between building self-funded businesses and venture-backed companies.